Raphia australis, the giant palm, Kosi Palm, or rafia, is a species of raffia palm in the family Arecaceae. It is found around Kosi Bay in southern Mozambique and northeastern KwaZulu Natal in South Africa. It is threatened by habitat loss caused by drainage of its habitat for agriculture; it is being threatened in the Bobole Special Reserve but is more secure in the Kosi Bay area.

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